SAA-C03 Q640 · Storage

Question

A company is building a stock trading application in the AWS Cloud. The company requires a highly available solution that provides low-latency access to block storage across multiple Availability Zones. Which solution will meet this requirement?

Accepted Answer

The question has three key requirements: (1) **block storage** access, (2) **low latency**, and (3) **high availability across multiple AZs**.

**Amazon FSx for NetApp ONTAP Multi-AZ** satisfies all three:

1. **Block storage via iSCSI**: FSx for NetApp ONTAP supports the **iSCSI protocol**, which presents storage as block devices (LUNs) to EC2 instances. This is true block-level storage access, not file-level.

2. **Low latency**: FSx for NetApp ONTAP provides sub-millisecond latency for data access. The iSCSI protocol delivers performance comparable to locally attached block storage.

3. **High availability across multiple AZs**: The **Multi-AZ deployment** option automatically provisions and maintains a standby file server in a different AZ. Data is synchronously replicated between AZs,

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